thi_motion_Nr4

Selected Articles in English
world data must be recorded on test tracks
with full-scale vehicles. Real-world data is
not only necessary for the validation of simulation
models but it is also highly useful
in the training process for statistical learning
algorithms. The CARISSMA Research Centre
and its testing infrastructure play an important
role for the generation of real-world
data, since the testing facilities permit the researchers
to record a large number of critical
traffic scenarios.
One important result of the project up to
now is the model-based “Augmented CL-
RRT” algorithm, which can be used to avoid
collisions between multiple traffic participants
by calculating safe trajectories. Until
now, the algorithm has only been implemented
and validated on a simulation PC, but in
the next step the researches will integrate the
algorithm into an automotive microcontroller.
Software for Safe Transportation
Vehicles are increasingly expected to communicate
with elements in their own environment
whether this is with other automobiles,
with pedestrians, bicyclists or traffic lights. In
a situation involving two or a few transportation
elements, so-called Car2X communication
technology is known to work flawlessly.
This is because, in such a situation, relatively
little data are being transferred between the
participants. Real traffic situations, however,
are generally much more complex. This
is especially true in urban scenarios or at
busy traffic hubs with intensive transportation
loads where a great number of vehicles
and pedestrians come together at the same
time in the same space. These actors need
to communicate effectively with one another.
Can Car2X communication technology – in
which masses of data are exchanged at high
rates –function reliably under such conditions?
And furthermore, how can communication
performance be evaluated in an enormous
exchange between many actors?
Researchers at the Technische Hochschule
Ingolstadt have developed the open
source software “Artery” through their work
in the new CARISSMA Research and Testing
Centre. Using Artery, such complex traffic
systems can be simulated and then analysed
according to Car2X demands. Parts of the
simulation were even developed in collaborative
work with Volkswagen Group Research.
This tool can be a great help to developers
of Car2X solutions. Engineers must be
confident, for example, that the innovative
functions they develop can communicate in
a robust fashion among a variety of transportation
actors. One of these functions is the
improvement of accuracy in GPS positioning.
Safety measures such as airbags or automatic
evasive manoeuvres can offer improved
protection through the implementation of
Car2X communication and precise positioning
of passengers. Drivers will be able to
avoid dangerous traffic situations when the
vehicle can warn them of unexpected road
works, icy roads or a breakdown on the road
ahead. The more automation and autonomy
becomes part of the regular traffic environment,
the more important it becomes to guarantee
reliable communication.
Since 2015 the Artery software has been
in regular use at a number of manufacturers.
It is, of course, constantly being improved by
the CARISSMA research team.
Safe Power Supplies for the E-Mobility
Solutions of Tomorrow
Professor Hans-Georg Schweiger has many
years of experience in both industry and research
developing energy storage systems
for hybrid and full-electric vehicles. Under his
leadership, the work group “Safe Electromobility”
(“Sichere Elektromobilität”) has been
established at the THI. The team’s research
proceeds rapidly, motivated by intensive cooperation
with local small and medium- local
businesses as well as industrial partners.
In addition to the private cooperation, a
number of publicly-financed research projects
are at the heart of Safe Electromobility’s
programme.
One such project, supported by the “FHprofUnt”
programme from the German Ministry
for Education and Research (BMBF), is
known as “LiKo”. This project seeks to understand
the cold-start performance of 12-volt
lithium-ion starter batteries in order to extend
their lifespan and also reduce the overall battery
weight.
A second BMBF programme known as
“FHInvest” is responsible for financing the
high-voltage test stand which itself is used
to examine safety-related battery system
components (“HCTestRig”). In the future,
the stand will be used to check the current
carrying capacity of batteries, conduct shortcircuit
experiments and investigate of the influence
of fluctuations in the on-board electrical
system on driving dynamics.
A cooperative project called LIBERA was
recently proposed to the Central Mid-Tier
Investment Programme (ZIM) and will develop
physical lithium-ion battery models that
will allow the simulation of electrochemical
effects and temperature changes on battery
systems outside their operating points.
Further support comes from Audi through
a project investigating the robustness,
ageing and qualification of high-voltage battery
systems as well as the development of
safety-related components for these systems.
New modelling and simulation possibilities
are being developed in cooperation
with CADFEM, enabling researchers to better
understand safety procedures in lithiumion
batteries.
A range of research also supports five different
cooperative doctoral projects involving
the technical universities in Chemnitz and
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